Supernova
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- Massive stellar explosion occurring at the end of a star's natural life cycle due to fusion pressure no longer able to balance against gravitational core collapse
- Results in a stellar remnant in the form of either a neutron star or a black hole
- Resulting explosion produces a wavefront of intense radiation, devastating planetary ecosystems within 25-50 ly
- Often also results in a surrounding micronebula, or even full nebula
Known supernovae
Known pending supernovae
- Betelgeuse (c. 1my from present)